diff --git a/hack/synchronize-istio-cni-manifests.sh b/hack/synchronize-istio-cni-manifests.sh
index 3c894ffe5..81c04b3b5 100644
--- a/hack/synchronize-istio-cni-manifests.sh
+++ b/hack/synchronize-istio-cni-manifests.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 @ -1,88 +0,0 @@
 
 # This script aims at helping create a PR to update the manifests of the